Implement for displacing bushings in tubular holders



L. C. EDELBLUT. IMPLEMENT FOR DISPLACING BUSHINGS IN TUBULAR HOLDERS. APPL'ICATION FILED APR. l2, |920.

Patented Jan. 4,1921.

UNlTED STATES PATENT OFFICE;

LOUIS C. EDELBLUT, GF AUGUSTA, GEORGIA.

Specification of Letters Patent.

T?atenteflJv an. 4, 192:1.

Application mea April 12, 1920. serial No. 373,312.

T 0 all whom it may concern.'

Be it known that I, Louis C. EDELBLUT, a citizen of the United States ot' America, and a resident of Augusta, Georgia, have invented new and useful Improvements in Implements for Displacing Bushings in Tubular Holders, which invention is fully set forth in the following specification.

This invention relates to an improved implement for displacing bushings in tubular holdersso constructed that ordinarytools cannot be used for the purpose. In many mechanical devices, bushings are seated in tubular' holders with their interiors so constructed as to form an obstruction of such a character as to prevent the access of an ordinary tool to the inner end of the bushing for the purpose of displacing the bushing. As a specific instance, the axlebox in the hub oi: an ordinary motor-vehicle wheel has an interior structure of such a character that it is almost impossible to engage an ordinary tool with the inner end of a seated bushing to move the latter outwardly. The object of the present invention is to provide an implement that can be readily positioned in a tubular holder to engage the inner end ot a bushing seated therein so that the implement can be driven to displace the bushing. Y

1n the drawings, in which similar reference characters designate corresponding parts,-

Figure 1 is a longitudinal sectionalview, partly broken away, of an axle-box and the implement positioned therein in engagement with the bushing thatis tobe displaced;

Fig. 2 is a plan view, partly broken away, showing the implement in position preliminaryy to engaging adjustment, the bushing and part or' the axle-box being shown in section;

Fig. 3 is a detail view, showing the flanged 'end of the engaging member. y

In Fig. 1 of the drawings is shown an axle-box 1 'of the hub of an ordinary motorvehicle wheel. In the opposite 'ends of this axle-box are seated the bushings 2 and 3 to form bearings for the antitriction rollers carried by the axle. hen these bearings become worn, replacement of the bushings is necessary. To prevent accidental displacement, these bushings are irmly seated when first placed in the axle-box. The subsequent rolling action ot the anti'friction rollers under the pressure of the load still Jfurther swages the bushings in 'place so that` their subsequent removal becomes extremely yditvicult withA ordinary tools. This ditlicpulty is increased by the annular projection 4 in the `axle-box as itvobstructs access to the inner ends of the bushings. It is the purpose of the present invention toprovide an implement that is particularly adapted to the removal of bushings so placed.

l The implement comprises a driving member 5 and an expanding member 6. .The driving member consistsnof a cylindrical body-'part 7. having an engagingviange 8at one end. Extending into the flanged end of the driving member is` the bore 9, and the annular wall so formed is divided by longitudinal slots 10 to form fingers 11 carrying at their ends the sections ofthe flange 8. Preferably there are six of these fingers, but the number may be varied to meet different requirements. The metal forming the slotted part of the driving member is tempered so as to impart elasticity to the fingers. The inner end of the bore 9 is continued inwardly at a reduced diameter, as at 12, .and is screw-threaded. With the spring-lingers 11 in `their normal position, the diameter of the body-part 7 is somewhat less thanl that of the opening through the annular projection 4 in the laxle-box, andthediameterof the flanged part `8 is somewhat. less than the interior diameter of the bushing 3,., so that the driving member canbe inserted'in the axle-box with the body-partpassing through the projection 4 and the edgeofrthe. flangesections 8 inside of the inner endof the bushing 3 that is to be removed, as shown in vTheexpanding member 6 is formed of a metal bar, and has at one `end a,handle13 of va ypolygonal shape toprovide a, handgrip or easy turning. The other end of the expanding member is ,screwthreaded.as at 14, toengage the threaded bore 12 of the driving member. Between the handle 13 and the threaded ,part 14, theexpanding member is of conical shape, as at 15.` The conicity is suchthat the part so shaped. Vwill readily enter the bore 9 of the driving member as the expanding member is turned into the driving member through the engagement of the threaded parts 12 and 14. As the conical part 15 moves into the bore 9, it acts as a wedge and forces apart the springingers 11 until the ange-sections 8 engage the inner end of the bushing 3, as shown in Fig. l. IVith the bushing so engaged, it can be driven from its place by blows on the end or head ot the driving ing outside of the axle-box. After the 1mplement has been moved clear of the axleboX, the expanding member can be unscrewed from the driving member and the spring-fingers will assume their normal positions.

The conical part l5 has considerable length so that bushings of different diameters can be removed. To meet the requirements of ,axle-boxes of extreme sizes, several of the implements of different sizes may be kept on hand. Where extremely heavy work is done, requiring such stilness in the spring-lingers as to prevent the turning of the'expanding member by hand, a wrench can be used on the polygonal-shaped handle 13 and the end 16 of the driving member flattened to be engaged by a vise.

While the implement has been described in the operation of removing bushings, yet it is obvious that it can also be used in the insertion or adjustment of bushings in tubular holders.

What is claimed is:

l. In an implement for displacing bushings in tubular holders, a bushing-engaging member comprising a cylindrical body-part having a head at one end for the applica-tion of a driving force, a flange at the other end and a longitudinal bore extending into the same through the lianged end thereof to form an annular wall, said wall being slotted longitudinally to form spring-iingers carrying flange-sections at their outer ends. in combination with an expanding' member adapted to enter the bore of the engaging member to force outwardly the spring-fingers to position the flange-sections to engage the bushing that is to be displaced.

2. In au implement tor displacing bushings in tubular holders. a bushing-engaging member comprising a cylindrical body-part having a flanged end and a longitudinal bore extending into the same through the flanged end to form an annular wall, said bore being screw-threaded at its inner end, said wall being slotted longitudinally to form spring-fingers carrying flange-sections at their outer ends. in combination with a bar-shaped expanding member adapted to enter the bore of the engaging member and having its entering end screw-threaded to engage the threaded part of the engaging member, said expanding member having a conical part to enter the longitudinal bore ot the engaging member to press outwardly the spring-fingers as the conical part moves into the bore through member projectthe turning of the expanding member into the engaging member, the spring-ngers in their outward movement carrying the flange-sections into position to engage the bushing that is to be displaced.

3. In an implement for displacing bushings in tubular holders, a bushing-engaging member comprising a cylindrical body-part having a flange at one end and adapted at the other end to pass through the tubular holder and to project beyond the same for the application of a driving torce, the diameter of the flanged end of the body-part being such as to pass through the bushing Seated in the holder that is to be displaced, said body-part having a longitudinal bore extending into the same through the flanged end thereof to form an annular wall and having a screw-threaded extension of said bore, said wall being slotted longitudinally to form spring-lingers carrying flange-sections at their outer ends, in combination with a bar-shaped expanding member adapted to enter the bore of the engaging member and having its entering end screwthreaded to engage the threaded extension of said bore so that the expanding member can be turned into the engaging member, a

grip on the outer end member for turning the same, and said expanding member having a conical part to enter the bore of the engaging member to force outwardly the spring-lingers to engage the flange-sections with the inner end of the bushing.

4. In an implement for displacing bushings in tubular holders, a bushing-engaging member comprising a cylindrical body-part having a head at one end for the application of driving` torce, a flange at the other end and a longitudinal bore extending into the same through the Hanged end thereof to form an annular wall, said bore being screw-threaded at its inner end and said wall being` slotted longitudinally to form spring-fingers carrying flange-sections at their outer ends, in combination with an expanding member adapted of the engaging member and having its entering end screw-threaded to engage the threaded part of the engaging member, the expanding member entering the bore of the engaging member operating to force outwardly the spring-fingers to position the flange-sections to engage the bushing that is to be displaced.

In testimony whereof I have signed this specification.

LOUIS C. EDELBLUT.

of the expanding to enter the boreI 

